Answer
D.Diffraction
Explanation
Diffraction is a property that is experienced by waves when they come across a barrier when they are in motion.
The ways tends to curve behind the barrier. This is called diffraction of waves.
Now, sound is a wave and it also experience diffraction. . So the brother will be able to hear the sound due to diffraction
Conduction occurs when a substance is transferring heat via touching.
Convention occurs when the substance being heated begins a cycle of cooling and heating. the heat goes to the opposite side of which the substance is being heated and the substance is cooled on the corresponding side, this cycle continues until the heat source is extinguished.
Radiation occurs when the heat of a substance is being transferred via gas form. Ex: sunburn.
Answer:
The rotational inertia of my wheel is
Explanation:
From the question we are told that
The mass of the wheel is
The radius of the wheel is
The height is
The linear speed is
According to the law of energy conservation
Where PE is the potential energy at the height h which is mathematically represented as
While KE is the kinetic energy at the bottom of height h
Where is the rotational kinetic energy which is mathematically represented as
Where is the rotational inertia
So substituting this formula into the equation of energy conservation
=>
substituting values
The charge is 2+ because it lost 2 electrons
Answer:
Blue light
Explanation:
Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves.